Brake.



J. E. WRIGHT.

BRAKE.

APPLICATION FILED 113.26, 1910.

Patented Mar. 21, 1,911.

Invenion Jbseph E. Wright JELiL-tys.

UNTTED %TATE% PATENT @FFTQE.

JOSEPH E. WRIGHT, OF. LANKERSHIM, CALIFORNIA.

BRAKE.

To all whom it may concern:

Be it known that I, JOSEPH E. WRIGHT, a citizen of the United States,residing at Lankershim, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in Brakes, ofwhich the following is a specification.

This invention relates to brakes, and it is particularly applicable inthe construction of brakes for wagons or similar vehicles.

The object of the invention is to produce a brake having improved meansfor attaching the shoe and block in position so that the block when worncan be readily replaced without necessitating the removing of any boltsor other fastening devices.

In the annexed drawing which fully illustrates my invention, Figure 1 isperspective showing the end of a brake beam and showing one of my brakesapplied thereto. Fig. 2 is horizontal section taken through the brakeand showing a portion of the brake beam. Fig. 3 is a vertical sectiontaken through the upper part of the brake about the line 33 of Fig. 2,certain parts being omitted or broken away.

Referring more particularly to the parts, 4- represents the brake beamwhich extends transversely of the vehicle so that its ends lie adjacentto the faces of the wheels. In applying my invention, on the verticaledge of the beam 4 which is disposed adjacent to the wheel I attach asocket 5, said socket being in the form of a plate, which tapersslightly toward its lower edge, the side edges of the plate being bentup so as to form inwardly inclining flanges 6. In this way the plate ismade to present the form of a dovetail when viewed in plan or horizontalcross section. This plate is attached to the face of the beam bysuitable screws 7 as shown in Fig. 2. The socket 5 affords means forholding a brake shoe 8, the body of which is in the form of a flat plate9 of substantial thickness, and this plate 9 is formed on one face witha tapered tongue 10, which is of dovetail form and this tongue 10 isadapted to be received in socket 5 by inserting the same from above. Theinclination of the side edges or faces 11 of the tongue 10 is the sameas the flanges 6, so that the tongue fits neatly in the socket and willwedge itself securely in position when set in place from the upper side.

On the face of the brake shoe 8 opposite the tongue 10 a block holder orbracket 12 is Specification of Letters Patent.

Application filed February 26, 1910.

Patented Mar. 21, 1911.

Serial No. 546,189.

attached, said block holder being in the form of a heavy plate which isattached by fasteningplevices or screws 13 to the shoe 8, as indicatedin Figs. 2 and On its upper end the block holder 12 is provided with alug or shoulder 14.- which projects over the upper edge of the shoe 8and assists in supporting the block holder, as will be readilyunderstood from an inspection of Fig. 3.

On the face of the block holder 12 adjacent to the wheel brake, a blockor wearing piece 15 is secured. This block 15 is of wedge or dovetailform, as shown, and tapers from its upper extremity toward its lowerextremity, that is, it has its reduced end downward. The block holder 12is pro vided on its side edges with flanges 16, which have undercut orinclined inner faces 17, which are adapted to receive the edges of theblock as shown in Fig. 2. It will be seen that the block holder forms atapered socket to receive the block. This block is inserted in positionfrom above and will am securely in the block holder, as will be readilyunderstood. The inner face 18 of the block 15 is concave as shown, so asto fit the curvature of the face of the wheel to which the brake isapplied. It should be understood that the brakes are applied to theforward side so that the direction of movement of the face of the wheeladjacent to the block is the same as that indicated by the arrow in Fig.1, that is, the frictional force on the block tends to move the blockdownwardly. This of course tends to seat the block more securely in theblock holder 12 and this downward force also acts upon the shoe 8 andtends to hold it more securely in the socket 5. When the block 15becomes worn it can be readily removed by striking its lower end with amallet or heavy object so as to drive the clock unwardlv out of theblock holder.

With the construction described it will be evident there is no necessityfor loosening any bolts or fastening devices whatever in removing andreplacing the brake block.

Special attention is called to the lug or shoulder 14, which projectsover the shoe 8. This shoulder imparts the thrust from the block holderto the shoe and relieves the fastening devices 13 of any strain; in thisrespect they simply operate to hold the faces of the shoe and the blockholder together.

It will be evident that the brake shoes 8 can be removed from the beamswhen desired With the same facility that the block 15 can be removedfrom the block holder.

Having thus described my invention What I claim as new and desire tosecure by Letters Patent is:

A brake comprising a beam, a socket attached to the side of said beam,said socket being in the form of a plate tapering in Width toward itslower edge and having side flanges, a shoe in the form of a flat platehaving a vertically disposed tapered tongue projecting therefrom, saidtongue being received in said socket and retained by said flanges, ablock holder seated against the outer face of the said shoe and having aIn Witness that I claim the foregoing I have hereunto subscribed my namethis 19th day of February, 1910.

J. E. WRIGHT.

Witnesses F. D. AMMEN, EDMUND A. STRAUSE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0. a

